Which methodology could cloud data storage utilize to encrypt all data associated in an infrastructure as a service (IaaS) deployment model?

Whole-instance encryption is an effective methodology for encrypting all data associated with an infrastructure as a service (IaaS) deployment model. This approach ensures that the entire virtual machine (VM) and all associated data, including operating system images, logs, and user data, are encrypted at rest. By implementing whole-instance encryption, organizations create a comprehensive security layer that protects sensitive information from unauthorized access, even if the underlying storage media is compromised.

This methodology is particularly valuable in IaaS environments, where customers may not have full control over the underlying physical servers or storage infrastructure. Whole-instance encryption allows for a seamless security posture, ensuring that all data is encrypted without requiring extensive configuration or individual file encryption.

While other encryption methodologies like sandbox encryption, polymorphic encryption, and client-side encryption may have specific use cases or advantages, they do not provide the same level of holistic protection for all data within an IaaS deployment, making whole-instance encryption the most suitable choice in this context.